<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>占位文本</title>
</head>

<body>
    文本框：<input type="text" placeholder="请输入账号">
    <br>
    密码框：<input type="password" placeholder="请输入密码" >

</body>

</html>